Which of the following statements about periodic table trends is/are true?
Select all that apply

1.Electron affinity of Br is more negative than the electron affinity of As.

2.Electron affinity of Kr is more negative than the electron affinity of Br.

3.Size of the Br atom is smaller than the size of Br- ion.

4.First ionization energy of Br is larger than the first ionization energy of As.

5.First ionization energy of Kr is larger than the first ionization energy of Br.